How to Speed Up Blender 2.80 EEVEE Viewport?
2.8 builds are snapshots of current development and are intended for testing a preview, not actual work. As parts, such as Eeevee, are not complete, there will be performance issues and bugs, and some features that are not yet present.

Given all of this, I would not yet be expecting any speed or performance features. And I wouldn't be worrying too much about their absence yet either.